六年级下册数学简便计算专题训练

六年级下册数学简便计算专题训练


简介:
7.6×99 =7.6×(100-1) =7.6×100-7.6 =760-7.6 =752.4 18.25-(3.5-1.75) =18.25-3.5+1.75 =18.25+1.75-3.5 =20-3.5 =16.5 (+)×15- =×15+×15- =1+- =1 9.6-11÷7+×4 =9.6-+ =9.6-1 =8.6 7.52÷2.5÷4 =7.52÷(2.5×4) =7.52÷10 =0.752 29.4÷2.8×(3.5-2.3) =29.4÷2.8×1.2 =10.5×1.2 =12.6